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Vet Comp Orthop Traumatol 2015; 28(04): 250-255
DOI: 10.3415/VCOT-14-12-0188
Original Research
Schattauer GmbH

Accuracy of three pre- and intraoperative measurement techniques for osteotomy positioning in the tibial plateau levelling procedure

H. Mossman
1   Veterinary Surgical Centers, Vienna, VA, USA
,
D.J. F. von Pfeil
2   Friendship Surgical Specialists of the Friendship Hospital for Animals, Washington, DC, USA
,
M. Nicholson
3   Central Animal and Referral Emergency Hospital, Fredricksburg, VA, USA
,
H. Phelps
4   CARE Veterinary Center, Frederick, MD, USA
,
E. Morris
5   Veterinary Surgical Referral Practice of Northern Virginia, Manassas, VA, USA
,
R. Bradley
5   Veterinary Surgical Referral Practice of Northern Virginia, Manassas, VA, USA
,
J. Taylor
6   Veterinary Surgical Centers, Leesburg, VA, USA
,
A. Langenbach
1   Veterinary Surgical Centers, Vienna, VA, USA
› Author Affiliations
Further Information

Publication History

Received:22 December 2014

Accepted:26 April 2015

Publication Date:
28 December 2017 (online)

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Summary

Objectives: To prospectively compare the accuracy of three preoperative measurement techniques in tibial plateau levelling osteo -tomy (TPLO) planning.

Methods: Fifty-nine dogs were randomly assigned to one of three measurement techniques; A, B or C. Surgeons measured the intended osteotomy location on preoperative radiographs according to the assigned technique. Measurements were used intra-operatively during osteotomy placement. Postoperative measurements were made by a single blinded observer and compared to preoperative measurements.

Results: Fifty-one dogs were included for final statistical analysis. The mean absolute differences between pre- and postoperative measurements was 1.72 mm ± 0.958, 1.79 mm ± 1.010, and 3.56 mm ± 1.839, for techniques A, B and C, respectively. No significant differences were identified for patient age, gender, limb or surgeon. Techniques A and B were not significantly different (p = 0.8799). Techniques A and B were significantly more accurate than C (p = 0.0001 and p = 0.0003, respectively). Weight was significantly different among the groups (p = 0.047) but the statistical results did not change when an adjustment was made for bodyweight (p = 0.4971, p <0.001 and p = 0.0007, respectively).

Clinical significance: Preoperative measuring for planning a TPLO osteotomy is recommended. Techniques A and B in the current study were clinically practical and significantly more accurate compared to technique C.

Keywords

Cranial cruciate ligament - tibial plateau levelling osteotomy - accuracy - dog - stifle
 

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